lxii 
Meteorological Observations. 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General's Office, Calcutta } 
in the month of November , 18G1. 
Monthly Eesults. 
Inches 
Mean height, of the Barometer for the month, .. .. 29.921 
Max. height of the Barometer occurred at 9 A. M. on the 30th, .. 30.144 
Min. height of the Barometer occurred at 3 p. M. on the 5th &8th, .. 29.775 
"Extreme range of the Barometer during the month, .. .. 0.3G9 
Mean of the daily Max. Pressures, .. .. ,, 29.984 
Ditto ditto Min. ditto, .. .. 29.872 
"Mean daily range of the Barometer during the month, .. .. 0.112 
o 
Mean Dry Bulb Thermometer for the month, .. •• 73.5 
Max. Temperature occurred at 3 p. m. on the 2nd, .. ., 87.6 
Min. Temperature occurred at 6 & 7 A. m. on the 30th, .. .. 57.8 
Extreme range of the Temperature during the month, .. 29 8 
Mean of the daily Max. Temperature, .. .. .. 79.6 
Ditto ditto Min. ditto, .. .. .. 68.9 
Mean daily range of the Temperature during the month, .. 10.7 
o 
Mean Wet Bulb Thermometer for the month, .. .. 68.9 
Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer,.. 4.6 
Computed Mean Dew-point for the month, .. .. 66.6 
Mean Dry Bulb Thermometer above computed Mean Dew*point, .. 6.9 
Inches 
Mean Elastic force of Yapour for the month,.• .. ., 0.651 
Troy grains 
Mean Weight of Yapour for the month, .. .. .. 7.11 
Additional Weight of Vapour required for complete saturation, .. 1.79 
Mean degree of humidity for the month, complete saturation being unity, 0.80 
Inches 
Rained 10 days, Max. fall of rain during 24 hours, .. .. 1.31 
Total amount of rain during the month, .. .. .. 4.39 
Prevailing direction of the Wind, «• N. & N, W. 
